1235210213 has 2 divisors, whose sum is σ = 1235210214. Its totient is φ = 1235210212.

The previous prime is 1235210203. The next prime is 1235210231. The reversal of 1235210213 is 3120125321.

Together with next prime (1235210231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1191147169 + 44063044 = 34513^2 + 6638^2 .

It is a cyclic number.

It is not a de Polignac number, because 1235210213 - 2⁸ = 1235209957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1235210203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617605106 + 617605107.

It is an arithmetic number, because the mean of its divisors is an integer number (617605107).

Almost surely, 2^1235210213 is an apocalyptic number.

It is an amenable number.

1235210213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1235210213 is an equidigital number, since it uses as much as digits as its factorization.

1235210213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 360, while the sum is 20.

The square root of 1235210213 is about 35145.5575144285. The cubic root of 1235210213 is about 1072.9519941974.

Adding to 1235210213 its reverse (3120125321), we get a palindrome (4355335534).

The spelling of 1235210213 in words is "one billion, two hundred thirty-five million, two hundred ten thousand, two hundred thirteen".